Automatiser avec 
Ansible

[front]                   # un groupe
front1                    # les machines du groupes
front2

[middle]
middle[1-2]               # pattern

[backend]
backend

[myenvironment:children]  # un groupe de groupe
front
middle
backend

backend | SUCCESS => {
    "changed": false,
    "ping": "pong"
}
front | SUCCESS => {
    "changed": false,
    "ping": "pong"
}
zabbixserver | SUCCESS => {
    "changed": false,
    "ping": "pong"
}

front | SUCCESS => {
    "ansible_facts": {
        "ansible_all_ipv4_addresses": [
            "172.21.0.4"
        ],
        "ansible_all_ipv6_addresses": [
            "fe80::42:acff:fe15:4"
        ],
        "ansible_architecture": "x86_64",
        "ansible_bios_date": "03/14/2014",
        "ansible_bios_version": "1.00",
        "ansible_date_time": {
            "date": "2017-03-14",
            "day": "14",
            "epoch": "1489509846",
            "hour": "16",
            "iso8601": "2017-03-14T16:44:06Z",
            "iso8601_basic": "20170314T164406313031",
            "iso8601_basic_short": "20170314T164406",
            "iso8601_micro": "2017-03-14T16:44:06.313111Z",
            "minute": "44",
            "month": "03",
            "second": "06",
            "time": "16:44:06",
            "tz": "UTC",
            "tz_offset": "+0000",
            "weekday": "Tuesday",
            "weekday_number": "2",
            "weeknumber": "11",
            "year": "2017"
        },
        "ansible_default_ipv4": {
            "address": "172.21.0.4",
            "alias": "eth0",
            "broadcast": "global",
            "gateway": "172.21.0.1",
            "interface": "eth0",
            "macaddress": "02:42:ac:15:00:04",
            "mtu": 1500,
            "netmask": "255.255.0.0",
            "network": "172.21.0.0",
            "type": "ether"
        },
        "ansible_distribution": "CentOS",
        "ansible_distribution_major_version": "6",
        "ansible_distribution_release": "Final",
        "ansible_distribution_version": "6.8",
        "ansible_dns": {
            "nameservers": [
                "127.0.0.11"
            ],
            "options": {
                "ndots": "0"
            }
        },
        "ansible_domain": "",
        "ansible_env": {
            "G_BROKEN_FILENAMES": "1",
            "HOME": "/root",
            "LANG": "en_US.UTF-8",
            "LESSOPEN": "||/usr/bin/lesspipe.sh %s",
            "LOGNAME": "root",
            "MAIL": "/var/mail/root",
            "PATH": "/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin",
            "PWD": "/root",
            "SHELL": "/bin/bash",
            "SHLVL": "2",
            "SSH_CLIENT": "172.21.0.5 37576 22",
            "SSH_CONNECTION": "172.21.0.5 37576 172.21.0.4 22",
            "SSH_TTY": "/dev/pts/0",
            "TERM": "xterm",
            "USER": "root",
            "_": "/usr/bin/python"
        },
        "ansible_eth0": {
            "active": true,
            "device": "eth0",
            "features": {
                "busy_poll": "off [fixed]",
                "fcoe_mtu": "off [fixed]",
                "generic_receive_offload": "on",
                "generic_segmentation_offload": "on",
                "highdma": "on",
                "hw_tc_offload": "off [fixed]",
                "l2_fwd_offload": "off [fixed]",
                "large_receive_offload": "off [fixed]",
                "loopback": "off [fixed]",
                "netns_local": "off [fixed]",
                "ntuple_filters": "off [fixed]",
                "receive_hashing": "off [fixed]",
                "rx_all": "off [fixed]",
                "rx_checksumming": "on",
                "rx_fcs": "off [fixed]",
                "rx_vlan_filter": "off [fixed]",
                "rx_vlan_offload": "on",
                "rx_vlan_stag_filter": "off [fixed]",
                "rx_vlan_stag_hw_parse": "on",
                "scatter_gather": "on",
                "tcp_segmentation_offload": "on",
                "tx_checksum_fcoe_crc": "off [fixed]",
                "tx_checksum_ip_generic": "on",
                "tx_checksum_ipv4": "off [fixed]",
                "tx_checksum_ipv6": "off [fixed]",
                "tx_checksum_sctp": "on",
                "tx_checksumming": "on",
                "tx_fcoe_segmentation": "off [fixed]",
                "tx_gre_csum_segmentation": "on",
                "tx_gre_segmentation": "on",
                "tx_gso_partial": "off [fixed]",
                "tx_gso_robust": "off [fixed]",
                "tx_ipxip4_segmentation": "on",
                "tx_ipxip6_segmentation": "on",
                "tx_lockless": "on [fixed]",
                "tx_nocache_copy": "off",
                "tx_scatter_gather": "on",
                "tx_scatter_gather_fraglist": "on",
                "tx_sctp_segmentation": "on",
                "tx_tcp6_segmentation": "on",
                "tx_tcp_ecn_segmentation": "on",
                "tx_tcp_mangleid_segmentation": "on",
                "tx_tcp_segmentation": "on",
                "tx_udp_tnl_csum_segmentation": "on",
                "tx_udp_tnl_segmentation": "on",
                "tx_vlan_offload": "on",
                "tx_vlan_stag_hw_insert": "on",
                "udp_fragmentation_offload": "on",
                "vlan_challenged": "off [fixed]"
            },
            "ipv4": {
                "address": "172.21.0.4",
                "broadcast": "global",
                "netmask": "255.255.0.0",
                "network": "172.21.0.0"
            },
            "ipv6": [
                {
                    "address": "fe80::42:acff:fe15:4",
                    "prefix": "64",
                    "scope": "link"
                }
            ],
            "macaddress": "02:42:ac:15:00:04",
            "mtu": 1500,
            "promisc": false,
            "speed": 10000,
            "type": "ether"
        },
        "ansible_fips": false,
        "ansible_form_factor": "Unknown",
        "ansible_fqdn": "4da41820e9a5",
        "ansible_gather_subset": [
            "hardware",
            "network",
            "virtual"
        ],
        "ansible_hostname": "4da41820e9a5",
        "ansible_interfaces": [
            "gre0",
            "ip6tnl0",
            "lo",
            "tunl0",
            "ip6_vti0",
            "gretap0",
            "sit0",
            "ip6gre0",
            "ip_vti0",
            "eth0"
        ],
        "ansible_kernel": "4.9.12-moby",
        "ansible_machine": "x86_64",
        "ansible_memfree_mb": 290,
        "ansible_memory_mb": {
            "nocache": {
                "free": 1293,
                "used": 705
            },
            "real": {
                "free": 290,
                "total": 1998,
                "used": 1708
            },
            "swap": {
                "cached": 0,
                "free": 3994,
                "total": 3994,
                "used": 0
            }
        },
        "ansible_memtotal_mb": 1998,
        "ansible_mounts": [
            {
                "device": "/dev/vda2",
                "fstype": "ext4",
                "mount": "/etc/resolv.conf",
                "options": "rw,relatime,data=ordered,bind",
                "size_available": 55290834944,
                "size_total": 63381999616,
                "uuid": "N/A"
            },
            {
                "device": "/dev/vda2",
                "fstype": "ext4",
                "mount": "/etc/hostname",
                "options": "rw,relatime,data=ordered,bind",
                "size_available": 55290834944,
                "size_total": 63381999616,
                "uuid": "N/A"
            },
            {
                "device": "/dev/vda2",
                "fstype": "ext4",
                "mount": "/etc/hosts",
                "options": "rw,relatime,data=ordered,bind",
                "size_available": 55290834944,
                "size_total": 63381999616,
                "uuid": "N/A"
            }
        ],
        "ansible_nodename": "4da41820e9a5",
        "ansible_os_family": "RedHat",
        "ansible_pkg_mgr": "yum",
        "ansible_processor": [
            "GenuineIntel",
            "Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz",
            "GenuineIntel",
            "Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz",
            "GenuineIntel",
            "Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz",
            "GenuineIntel",
            "Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz"
        ],
        "ansible_processor_cores": 1,
        "ansible_processor_count": 4,
        "ansible_processor_threads_per_core": 1,
        "ansible_processor_vcpus": 4,
        "ansible_product_name": "BHYVE",
        "ansible_product_serial": "None",
        "ansible_product_uuid": "1384B81A-C34C-E039-A3D0-76E55EDE16BC",
        "ansible_product_version": "1.0",
        "ansible_python": {
            "executable": "/usr/bin/python",
            "has_sslcontext": false,
            "type": "CPython",
            "version": {
                "major": 2,
                "micro": 6,
                "minor": 6,
                "releaselevel": "final",
                "serial": 0
            },
            "version_info": [
                2,
                6,
                6,
                "final",
                0
            ]
        },
        "ansible_python_version": "2.6.6",
        "ansible_selinux": false,
        "ansible_service_mgr": "sshd",
        "ansible_ssh_host_key_dsa_public": "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",
        "ansible_ssh_host_key_rsa_public": "AAAAB3NzaC1yc2EAAAABIwAAAQEAvFCRM1GQ2VGhNfftReWaJ7tNOxiMNk0z/Uj8oIyFVbnr9aeFckoY4JogxMYqMZUivbuQo+Dh1AhE/x4ZOGqKr0pZILARQyEgEpd0IEdQ4fDKN93ZsCUFE6DmYymEm+CjQ5y7S3wz04A/nwcyjEMvjL9wt5sVMxZaxIXyvlDsl1opM8YvZhv2S6AZJ5ck+5am8AIYAyyvnwbbPpAH6ClXwycZJW3hMwOVzfWz/4HyK4lsRItRkiCNoSbls+LiOWpZ44/R4vEcG1l6dtekaWllqlzF7JFgKauFScU7TiyGIH9o/13Lj5H00IazAwnNkbYkqRJkqBGwPSsqx6klK1n2Yw==",
        "ansible_swapfree_mb": 3994,
        "ansible_swaptotal_mb": 3994,
        "ansible_system": "Linux",
        "ansible_system_capabilities_enforced": "True",
        "ansible_system_vendor": "NA",
        "ansible_uptime_seconds": 217034,
        "ansible_user_dir": "/root",
        "ansible_user_gecos": "root",
        "ansible_user_gid": 0,
        "ansible_user_id": "root",
        "ansible_user_shell": "/bin/bash",
        "ansible_user_uid": 0,
        "ansible_userspace_architecture": "x86_64",
        "ansible_userspace_bits": "64",
        "ansible_virtualization_role": "guest",
        "ansible_virtualization_type": "docker",
        "module_setup": true
    },
    "changed": false
}

front | SUCCESS => {
    "changed": true,
    "msg": "",
    "rc": 0,
    "results": [
        "Loaded plugins: fastestmirror, ovl\nSetting up Install Process\nLoading mirror speeds from cached hostfile\n * base: distrib-coffee.ipsl.jussieu.fr\n * extras: distrib-coffee.ipsl.jussieu.fr\n * updates: ftp.ciril.fr\nResolving Dependencies\n--> Running transaction check\n---> Package httpd.x86_64 0:2.2.15-56.el6.centos.3 will be installed\n--> Processing Dependency: httpd-tools = 2.2.15-56.el6.centos.3 for package: httpd-2.2.15-56.el6.centos.3.x86_64\n--> Processing Dependency: apr-util-ldap for package: httpd-2.2.15-56.el6.centos.3.x86_64\n--> Processing Dependency: /etc/mime.types for package: httpd-2.2.15-56.el6.centos.3.x86_64\n--> Processing Dependency: libaprutil-1.so.0()(64bit) for package: httpd-2.2.15-56.el6.centos.3.x86_64\n--> Processing Dependency: libapr-1.so.0()(64bit) for package: httpd-2.2.15-56.el6.centos.3.x86_64\n--> Running transaction check\n---> Package apr.x86_64 0:1.3.9-5.el6_2 will be installed\n---> Package apr-util.x86_64 0:1.3.9-3.el6_0.1 will be installed\n---> Package apr-util-ldap.x86_64 0:1.3.9-3.el6_0.1 will be installed\n---> Package httpd-tools.x86_64 0:2.2.15-56.el6.centos.3 will be installed\n---> Package mailcap.noarch 0:2.1.31-2.el6 will be installed\n--> Finished Dependency Resolution\n\nDependencies Resolved\n\n================================================================================\n Package            Arch        Version                      Repository    Size\n================================================================================\nInstalling:\n httpd              x86_64      2.2.15-56.el6.centos.3       updates      834 k\nInstalling for dependencies:\n apr                x86_64      1.3.9-5.el6_2                base         123 k\n apr-util           x86_64      1.3.9-3.el6_0.1              base          87 k\n apr-util-ldap      x86_64      1.3.9-3.el6_0.1              base          15 k\n httpd-tools        x86_64      2.2.15-56.el6.centos.3       updates       79 k\n mailcap            noarch      2.1.31-2.el6                 base          27 k\n\nTransaction Summary\n================================================================================\nInstall       6 Package(s)\n\nTotal download size: 1.1 M\nInstalled size: 3.7 M\nDownloading Packages:\n--------------------------------------------------------------------------------\nTotal                                           547 kB/s | 1.1 MB     00:02     \nRunning rpm_check_debug\nRunning Transaction Test\nTransaction Test Succeeded\nRunning Transaction\n\r  Installing : apr-1.3.9-5.el6_2.x86_64                                     1/6 \n\r  Installing : apr-util-1.3.9-3.el6_0.1.x86_64                              2/6 \n\r  Installing : apr-util-ldap-1.3.9-3.el6_0.1.x86_64                         3/6 \n\r  Installing : httpd-tools-2.2.15-56.el6.centos.3.x86_64                    4/6 \n\r  Installing : mailcap-2.1.31-2.el6.noarch                                  5/6 \n\r  Installing : httpd-2.2.15-56.el6.centos.3.x86_64                          6/6 \n\r  Verifying  : httpd-2.2.15-56.el6.centos.3.x86_64                          1/6 \n\r  Verifying  : apr-util-ldap-1.3.9-3.el6_0.1.x86_64                         2/6 \n\r  Verifying  : apr-1.3.9-5.el6_2.x86_64                                     3/6 \n\r  Verifying  : httpd-tools-2.2.15-56.el6.centos.3.x86_64                    4/6 \n\r  Verifying  : mailcap-2.1.31-2.el6.noarch                                  5/6 \n\r  Verifying  : apr-util-1.3.9-3.el6_0.1.x86_64                              6/6 \n\nInstalled:\n  httpd.x86_64 0:2.2.15-56.el6.centos.3                                         \n\nDependency Installed:\n  apr.x86_64 0:1.3.9-5.el6_2                                                    \n  apr-util.x86_64 0:1.3.9-3.el6_0.1                                             \n  apr-util-ldap.x86_64 0:1.3.9-3.el6_0.1                                        \n  httpd-tools.x86_64 0:2.2.15-56.el6.centos.3                                   \n  mailcap.noarch 0:2.1.31-2.el6                                                 \n\nComplete!\n"
    ]
}

front | SUCCESS => {
    "changed": true,
    "enabled": true,
    "name": "httpd",
    "state": "started"
}

- hosts: webservers
  vars:
    http_port: 80
    max_clients: 200
  remote_user: root
  tasks:
  - name: ensure apache is at the latest version
    yum: name=httpd state=latest
  - name: write the apache config file
    template: src=/srv/httpd.j2 dest=/etc/httpd.conf
    notify:
    - restart apache
  - name: ensure apache is running (and enable it at boot)
    service: name=httpd state=started enabled=yes
  handlers:
    - name: restart apache
      service: name=httpd state=restarted

httpd_version: 2.3

- name: Ensure httpd is installed
  yum: name= "httpd"
       state= present
       version= {{ httpd_version }}

playbooks/
├── hosts
├── groups_vars
│   ├── all
│   │   └── vars.yml
│   ├── prod
│   │   └── vars.yml
│   ├── dev
│   │   └── vars.yml
│   └── qualif
│       └── vars.yml
├── host_vars
│   ├── webserver01
│   │   └── vars.yml
│   └── database02
│       └── vars.yml
├── site.yml
├── webservers.yml
└── database.yml

- name: Install Apache (Ubuntu)
  apt: name=apache state=latest
  when: ansible_os_family == 'Debian'

- name: Install Apache (CentOS)
  yum: name=httpd state=latest
  when: ansible_os_family == 'RedHat'

- include: tasks/sometasks.yml
  when: "'reticulating splines' in output"

- name: add several users
  user:
    name: "{{ item }}"
    state: present
    groups: "wheel"
  with_items:
     - testuser1
     - testuser2

- name: add several users
  user:
    name: "{{ item.name }}"
    state: present
    groups: "{{ item.groups }}"
  with_items:
    - { name: 'testuser1', groups: 'wheel' }
    - { name: 'testuser2', groups: 'root' }

# Generated by Ansible for {{ansible_fqdn}}
{% if step_main_version == 'v7' %}
export JDK_HOME={{ jdk_home }}
export JAVA_HOME={{ jdk_home }}
{% endif %}
{% if step_jmx_enabled %}
export JAVA_OPTS="{{ java_opts }} {{ step_jmx_options }}"
{% else %}
export JAVA_OPTS="{{ java_opts }}"
{% endif %}

- name: test play
  hosts: webservers
  serial:
    - "10%"
    - "20%"
  max_fail_percentage: 5

- hosts: webservers
  serial: 5
  tasks:
  - name: take out of load balancer pool
    command: /usr/bin/take_out_of_pool {{ inventory_hostname }}
    delegate_to: {{loadbalancer}}

# ...
  tasks:
  - name: take out of load balancer pool
    local_action: command /usr/bin/take_out_of_pool {{ inventory_hostname }}

playbooks/
├── hosts
├── group_vars
├── roles
│   ├── ansible_role_httpd
│   │   ├── defaults
│   │   │   └── main.yml
│   │   ├── files
│   │   │   └── <file.txt>
│   │   ├── handlers
│   │   │   └── main.yml
│   │   ├── templates
│   │   │   └── <httpd.nj2>
│   │   ├── tasks
│   │   │   └── main.yml
│   │   └── vars
│   │       └── main.yml
│   └── ansible_role_mysql
│   │   ├── defaults
│   │   │   └── main.yml
│   │   ├── files
│   │   │   └── <file.txt>
│   │   ├── handlers
│   │   │   └── main.yml
│   │   ├── templates
│   │   │   └── <mysql.conf.nj2>
│   │   ├── tasks
│   │   │   └── main.yml
│   │   └── vars
│   │       └── main.yml
└── site.yml

- name: Install httpd on webservers
  hosts: webservers
  roles:
    - ansible-role-apache